What I'm looking for is a service that hosts iOS/Android builds per git branch. The goal is that our CI would build on each commit and push a new build to that service so that early testers can juggle between branches and test on real devices.

All the "beta" services I could find (like TestFlight or HockeyApp) only allow either one active build, or one active build per version. It doesn't help much because typically those branches are not part of a release yet.

Thanks!